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Operator product expansion and quark condensate from lattice QCD in coordinate space

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Operator product expansion and quark condensate from lattice QCD in coordinate space

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dc.contributor.author	Giménez Gómez, Vicente
dc.contributor.author	Lubicz, V.
dc.contributor.author	Mescia, Federico
dc.contributor.author	Porretti, V.
dc.contributor.author	Reyes Gámez, Juan
dc.date.accessioned	2014-09-25T11:37:38Z
dc.date.available	2014-09-25T11:37:38Z
dc.date.issued	2005
dc.identifier.citation	Giménez Gómez, Vicente Lubicz, V. Mescia, Federico Porretti, V. Reyes, J. 2005 Operator product expansion and quark condensate from lattice QCD in coordinate space European Physical Journal C 41 4 535 544
dc.identifier.uri	http://hdl.handle.net/10550/38971
dc.description.abstract	We present a lattice QCD determination of the chiral quark condensate based on a new method. We extract the quark condensate from the operator product expansion of the quark propagator at short euclidean distances, where it represents the leading contribution in the chiral limit. From this study we obtain <(q) over barq > MS( 2 GeV) = -( 265 +/- 5 +/- 22MeV)(3), in good agreement with determinations of this quantity based on different approaches. The simulation is performed by using the O( a)- improved Wilson action at beta = 6.45 on a volume 32(3) x 70 in the quenched approximation.
dc.language.iso	eng
dc.relation.ispartof	European Physical Journal C, 2005, vol. 41, num. 4, p. 535-544
dc.subject	Física
dc.title	Operator product expansion and quark condensate from lattice QCD in coordinate space
dc.type	journal article	es_ES
dc.date.updated	2014-09-25T11:37:38Z
dc.identifier.doi	10.1140/epjc/s2005-02250-9
dc.identifier.idgrec	041523
dc.rights.accessRights	open access	es_ES